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Electric control mechanism for stalled blade damper plate of wind-driven generator

A technology for wind turbines and stall blades, which is applied in the control of wind turbines, wind turbine components, wind turbines, etc., can solve problems such as promoting oil leakage and damage, and achieve the effect of saving electric energy and reducing maintenance costs.

Inactive Publication Date: 2007-07-11
包头市汇全稀土实业(集团)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the huge difference in temperature between winter and summer, the density of hydraulic oil also changes greatly, which further promotes oil leakage and damage.

Method used

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  • Electric control mechanism for stalled blade damper plate of wind-driven generator

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Embodiment Construction

[0007] With reference to the accompanying drawings: there is a damping plate on each blade tip of the stall type wind power generator, and its main purpose is to use when the air resistance brakes. It is connected to the actuator through a steel cable. When the wind turbine is running, the steel cable is tightened. The damping plate and the blade are on the same natural twisted surface, forming the same complete blade. The plate rotates and creates damping, acting as an air drag brake. The invention adopts an electric method to control the tension and release of the steel cables.

[0008] The permanent magnet motor of the present invention is composed of an electromagnetic coil and a silicon steel sheet to form a rotor 6 and a rotating device composed of a rare earth magnetic steel. The screw rod 3 and the nut 5 form a screw system. The screw rod 3 is connected to the control cable, and the nut 5 is directly connected to the rotor 6. . When the stator on the permanent magnet...

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Abstract

The invention relates to an electric control mechanism for damping plate of stalled blade in wind turbine, belonging to wind power generation area, characterized in that the guide head of lead screw is located in guide cylinder and connected with the lead screw, the lead screw is connected with nut and the nut is connected with the rotor of permanent magnet motor. There are no pressure and no leakage in the electric control mechanism for wind turbine. The electric control mechanism can not be influenced by climate and the maintenance cost is decreased greatly. The mechanism has big torque. When it does not act, there is no need to electrify to lock the damping plate tightly by big self-locking torque and electric energy exhausted for maintaining locking the damping plate is saved. The control circuit can be sent to actuator mechanism by electric collection ring. Compared with sending the control circuit to the actuator mechanism by hydraulic rotating joint, it is cheaper, simple and stable. The invention can adjust the torque and the speed automatically in random and it is the ideal control mechanism for damping plate of stalled blade in wind turbine.

Description

1. Technical field [0001] The invention relates to an electric control mechanism for a stall blade damping plate of a wind power generator, which belongs to the field of wind power generation. 2. Background technology [0002] The actuator of the stall-type grid-connected wind turbine is to control the tension and release of the steel cable through the hydraulic cylinder. When braking, the damping plate must be used to adjust the air damping of the blades. There is a piece on the tip of each blade. The damping plate, the damping plate is controlled by the hydraulic system to achieve the release and retraction of the damping plate. There must be a rotary joint to connect the hydraulic system to the rotating blades. The hydraulic cylinder must also ensure a certain pressure when the wind turbine is running so that the damping plate is in the retracted position, so the rotary joint and the cylinder are always under pressure. , so that oil leakage, oil cylinder and rotary joint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00F03D7/00F03D80/00
CPCY02E10/723Y02E10/722Y02E10/72
Inventor 张富全
Owner 包头市汇全稀土实业(集团)有限公司
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